Nicholay jensen



(No Model.) l

N. JENSEN.

CLEANER POR SLATES, BLAGKBOARDS, &c.

Patented Jan. 8, 1889 HHLE'ESES, f

N, PE-rcns. Pmwmmgmpner. wasmngmn. n. c.

IINTTED STATES PATENT Ottica.

NICHOLAY JENSEN, OF IVASHINGTON, DISTRICT OF COLUMBIA.

CLEANER FOR SLM-Es, BLACKBOARDS,`&C.

SPECIFICATION forming part of Letters Patent No. 395,905, dated January 8, 1,889.

y Application tiled June 2, 1888. Serial No. 275,853. (No model.)

To all whom it may concern.-

Be it known that I, NICHOLAY JENsEN, a citt zen of the United States, residing' at Tashington, in the District of Columbia, have invented certain new and useful Improvements in Cleaners for Slates, zlackboards, Glass, dac.; and I do hereby declare the following to loe a full, clear, and exact description of the invention, such as will enable others skilled in the art to'which it appertains to make and use the saine.

My invention relates to cleaningI devices for slates, blaekboards, glass, and like articles; and it consists of certain features of construction, which will be hereinafter more fully described.

I have illustrated different forms in which I have contemplated embodying my invention in the accompanying drawings, and said invention is fully disclosed. 'in the following specification and claims.

In the drawings, Figure l is a top vview of myimprovcd cleaning device. Fig. 2 is a vertical section of the same. Fig. 3 is a similar view of a slightly-different species of cleaner en'ibodying my invent-ion. Fig. i is a sectional view of still another species of my improved cleaning device.

In the Yform shown in Figs. l., and $3 my improved cleaning device is preferably made of rubber or other elastic material which will. hold its shape, and consists of the two receptacles or chambers A and B, united by a short neck, (f. 'lhe neck is provided with a narrow slit or perforation, c, connecting the chambers A and B, which is normally held in a closed or nearly closed position. This aperture may be distended by drawing the side vwalls of chamber B in opposite directions to permit the insertion of some absorbent material, preferably sponge, which is forced through the distended opening. Then the material has been introduced into chamber A, the tension of the rubber will draw the sides of the slit together, thus closing the aperture. I prefer to provide the chamber A with a thicker portion, C', as shown in Fig. 3, and form therein a wedge-shaped slit or perforation, or a cone-shaped opening, having its greatest diameter at its lower end. By this means, when the slit is distended, the inor apertures.

clined sides will guide the absorbent material through the opening, or it maybe forced through in any desired way. The compartment B is open at its lower extremity, and is filled with some soft drying material, as cloth rags, felt, cotton waste, or dry sponge, as de sired. rlhe compartment A is also provided with a. slit'or aperture7 o, ora series of such slits I prefer to employ a single slit or series of slits ruiming in the same direction, which will be normally held in a closed position by the tension of the rubber. I may, however, employ a series of round or other shaped apertures.

The operation is as follows: The side walls of chamber A are subjected to a slight compression suflicient to cause the slit a to open, and the upper portion of the device immersed in water or other cleaning-fluid. The liquid will enter the aperture a and saturate the sponge or other absorbent material. Xl'hen this is effected, the device is removed from the fluid and the pressure released, when the slit will close, thus forming an air-tight receptacle for the sponge and preventing the evaporation of the liquid. lYhen it is desired to employ the device'for cleaning slates, blackboard s, glass, or other article, the compartment A is inverted over the article and subjected to slight lateral pressure, which will cause the slit a to open and allow a few drops of water to fall upon the article. The device is then returned to its normal. position and the soft material in compartment B brought into contact with the article, elfectually cleaning and drying the same. The operation may be repeated as often as desired until the liquid in the sponge is exhausted, when it may be refilled, as before described.

The sponge or other absorbent material forms a reservoir for the retention of water, and the peculiar construction of compartment A prevents evaporation, so that the supply of water will last a long time without replenishing. become soiled, or for any other reason it is de sirable to change the same, it can be instantly withdrawn and the fresh material substituted. Should it become necessary to substitute a fresh sponge or absorbent material in compertinent A, the same can be easily accomlVhen the material in chamber B has IOO plished h v tirst removing' the material in eompartment vl and distentling' the oljiening' e in the neel: \\'hen the t'orm ot" neek shown in liig'. $3 is employed, the water will he ett'eetuall [nevented t'rom entering ehamher l hy the torni ol the slit e.

The pressure exerted upon the side walls ol' reeeptaele A will eause the slitv or aperture C to elose more tightly, and no water will enter retepl'aele l. it lrvaeeidental pressure a quantit)Y olA the liquid he squeezed ont otthe sponge and sett le in the hottom ot' the ehamher A, the enrved portion will eanse the water to remain at, the hase ot' the same and will prevent it t'rom entering reeeptaele l.

ln Fig. -l VI have shown another speeies ot' my improved eleaning deviee, whieh will he Iound espeeiall) desirable in eleaning' g'lass a nlinkindred ttses. ln thiseonstrm-tion lprovide the hase portion l ot' harder material, sneh :ls glassor hard rnhherorairvothersuit.- :dile material. lhis reeeptaele is open at its upper end, and is provided with a tlange, l), whieh diverg'es ont\\ardl,\' t'rom the point where it joins the ehamher ll.

'lhe reeeptaele A is ['ormed oi` tlexihle 1naterial in the manner alreadydeserihed, and is provided with a llange, e', on its lower side, slightlvsmallerthanthetlangeh. 'l`histlang'e, heing' elastie, natv he expanded and plaeed oveA and in engagement with tlang'e o, as shown in liigl t, and will retain the reet'eptaele in position hiv the tension ot' the elastie material ot whieh it is composed. lt' pret'erred or ["ound desirable, the [langes fand l) may he united h v means ot ."eement. The sponge mayhe inserted within the Areeeptmle A het'ore it is applied to the chamber l?, or after, as pretferred. l may prefer to t'ormthe ehamher l with a solid top and Vplaee the spol'ig'ewitfhin it het'ore applying' it to the hase portion, in whieh ease Vl may dispense wmh the hottom ot' the reeeptaele A and eonstrntft the side walls ol the same to migage the t'lang'e h.

'lhe Y['orms shown and deserihed are in v preterret'l t`orms and eonstitnte :t \er,\feltieieut eleaning deviee lor slates and ltlaelihoards, and 'h v its 'peeuliar t'orm will rest'. upon a desk or tahle in theljiosition shown in the drawings. The water, being' held hv the ahstnhent nn'lterial in an air-tight reeeptaele, will not eome in eontaet with the desk or tahle or any objects thereon, should the reset'- voir heeome aeeidentall \Y inverted, and the shape o'tf the hase tends to keep the said reservoir in an upright position. VI mayprovide the lower portion ot' ehamher E with a tlap or eover, whieh will prevent `it when used on a desk or tahle t'rom soilingI the ohjeets with which it eomes iu eolitaet.

ly eo'nstrneting the parts oli' elastie material the deviee eaunot he easilyhroken or rendered untit t'or use7 and hence is very durahle, and the sptmg'e, heilig' prott'teted t'rom wear, will last indelinitelv without renewal.

ll as heing' integral and eonit'ioset'l otA elastie material, and again as being the one ot' elastie and the other ot` harder materiahtlle parts heing snitz'lfhly eonneeted, Vl may eonstruet them Itoth separatel)Y ol' sot't ruhlier or other elastit"y snhstanee and unite the parts in any snitahle manner.

l have shown the reeeptaele A smallertlnui eltamlier It and :lhove the same. l n1:-L v,ln w ever, eonst rut-t them ot e |nal size and ol an)Y preterred' torm without departing' t'rom the spirit ot my invention.

`llaving' t'leserihed my invention, what I elaim, and desire to seenre hiv Letters Patent,

1l. A eleaner t'or slates, lilaek'hoartls, lglass, and like artieles, eonsisting' ot' reeeptaeles Y[for wnitail'ting'a liduid-stlpp'llv and lor dr \"ing' man terial, said lidnid-reeept:tele heingl eomptised ol' elast ie material and provided with :in opening' normallyv elosed h v the tension oi said elast ie material, suhstant tally as deserihed.

L. ln a eleaner l'or slat es, hlaelihoards, glass, and like artieles, the eomhinaton, with a litl-` uid-reeept:lele tor eontaining ahsorhent material and having' an opening' t'or the insertion oIA the same, ot a reeeptaele adjacent to said litpiid-reeejptaele, the liquitl-reetij)taule heing eomposed ot" elastie material and provided with a diseharge-opening', hoth ot' said openings heilig normallyv elosed livt he tension ot? the elastie material, suhstantially as de serihed.

il. ln a eleaner tor states, hhtelchoards,g'lass, and like artieles, the eomhination, with a litlnitl-reee])taelehavingI a thiekened hott'om portion provided with an aperture the diameter ol'l whieh is smallest at its top, ol' a reee'l'itaele Ior drying` material1 sul-istantially as deserilied.

t. ln a eleaner or slates and other art ieles, the eomliination, with an elastie reeeptaele, Complete in itself7 ol' a reeeptaele for ahsorhent` material, the said receptacles being separahle, hut: eonneeted end to end, substantially as desc-ril ted.

`lu a eleaner 'or slates,hlaekboards,glass, and like art ieles7 the eomhination,with a liquid-reeejptaele eomtmsed whollyot.' elastic ulaterial and provided with an elastic flange, olf a reeeptaele t'or drying' materia] having' rigid walls and provided with a liverg'ing' tlalig'e athuited to he engaged hy said elastie (lange, suhstant ialllyY as deseriher'l.

tft. ln a el eane r t'or states, hlaelqhttards, glass, and like artieles, the eomlfiination, with a liquid1'eee] itaele composed ot elastiematerial and provided with a thickened bottom pou tion having' an opening' therein :ti'or the insertion ot" ahsorlmnt material, and, boing' also provitllcwl with an elastie llange, ol. a receptaele lfm-drying' material havingrig'id walls and provided with a diverging' tiang'e :'u'lapted to he eng'ag'etfl hy said elastie tlaug'e, substantiallyv as ldeseriliied.

7. A Cleaner lor states, hhtekhoa rds, glass,

\Vl1ile I have showi'l the reeeptaeles A and and like articles, etjtnsisting ot' reeeptaeles ti'el' containing a liquid supply and for drying' inasaid liquid receptacle, substantially as de- 1o terial, said liquidreceptacle being,` composed scribed.

of elastic material and provided with absorb- In testimony whereof I affix my signature in ent material within the Same, Substantiallyas presence of two Witnesses. described. T T 1 T S. A cleaner for slates, blackboards, glass, NICHOLAX JEL SE' and like articles, consisting' of a liquid-recep- 'ilvnesses: tacle composed of elastic material and hav- I L. P. VHITAKER, ing an absorbent material Wholly Within the WV. R. MACK. 

